Inclusive and Direct Photons in S + Au Central Collisions at 200A GeV/c

Details Inclusive and Direct Photons in S + Au Central Collisions at 200A GeV/c Inclusive and Direct Photons in S + Au Central Collisions at 200A GeV/c

1999-04-13

arxiv.org/abs/nucl-th/9904035v1

Phys.Rev. C61 (2000) 064905

Physics

Nuclear Physics

Nuclear Theory

6 pages with 5 figures

Scientific paper

10.1103/PhysRevC.61.064905

A hadron and string cascade model, JPCIAE, which is based on LUND string model, PYTHIA event generator especially, is used to study both inclusive photon production and direct photon production in 200A GeV S + Au central collisions. The model takes into account the photon production from the partonic QCD scattering process, the hadronic final-state interaction, and the hadronic decay and deals with them consistently. The results of JPCIAE model reproduce successfully both the WA93 data of low p_T inclusive photon distribution and the WA80 data of transverse momentum dependent upper limit of direct photon. The photon production from different decay channels is investigated for both direct and inclusive photons. We have discussed the effects of the partonic QCD scattering and the hadronic final-state interaction on direct photon production as well.

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